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期刊论文
Cavernous transformation of the portal vein secondary to tumor thrombosis of hepatocellular carcinoma: spiral CT visualization of the collateral vessels
Abdcom Imaging 25: 000-000 (2000),-0001,():
Background: We investigated the constituting collateral vessels in cavernous transformation of the portal vein (CTPV) caused by tumor thromboals of hepatocellalar carcinoma (HCC) by using contrast-enhanced spiral computed tomographie (CT) examination. Methods: Fifty-four histopathothgically proven HCC patients with tumor thrombosis-induced CTPV were retrospectively included and assigned to cirrhosis negative (n=31) and positive (n=23) groups. Another 15 cirrhotic patients with portal hypertension but no HCC and CTPV were used for comparison. Standardized dualphase contrast-enhanced spiral CT was perfornned for all patients. CT appearances of the collateral vessels of CTPV were observed, and their visualization rates were analyzed. Results: Biliary (cystic and paracholedochal veins) and gastric (left and right gaslric veins) branches of the portal vein were the most frequently visualized collateral vessels of CTPV. There was a marked difference in CT visualizetion rates for billary branches between patients with and without CTPV (83-94% vs. 0). No difference existed in visualization rates for gastric branehes across the three groups (77-87% for left gastric, 58-61% for rigbt gastric vein). Conclusion; Biliary and gastric branches of the portal vein are tile major collateral vessels of CTPV. The intergroup differences in CT visualization rates may provide clues to the roles that they migbt play in the hemody namic adaptation process of CTPV.
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